I don’t think it’s really a “ cure” it would just alleviate the symptoms.
I’m not against it, we just don’t use it , in fact I’ve forgotten about it.
My husband does work for a state narcotics dept and it was part of their jobs to check pharmacies signatures of people purchasing as part of the regulation process as it defiantly was a huge problem being turned into illegal narcotics a while back.

We also ended up in the ER as my husbands heart rate got to a dangerous level when he took a couple tablets for a sinus cold. We thought he was having a heart attack.
Luckily we figured out it got dangerously high from this medication.

chrisfeerer, I know it's frustrating. I just checked for you and you can buy it over the counter at the Pharmacy, but, you have to sign for it. People that don't abuse medications are the ones that have to go the "extra mile" to get them because of the few that do.

You could ask your doctor if he recommends you using if you get COVID again (I hope you don't!) or sinus pressure. You do have to be careful with decongestants if you have high blood pressure and perhaps other medical issues.

Blessings to you & yours....